Quite simply, IE 9 back button is flawed. It's a known problem. It fails and / or works very unpredictably. It's the biggest annoyance with IE 9, for me, other than the memory leak on my 64 bit system.

I believe some sites bombard you with stuff, including the inability to back away from the site. They want you to read their stuff! Perhaps I'm wrong but I think not. I have seen something similar to this on my Yahoo home page (just 1 of 3 home pages) The others all work correctly, but it seems that every link I click on from the Yahoo home page, it takes 3 clicks before the back button on my mouse works. Who knows, perhaps it is IE 9 or something else.

I understand that Ted but what's the purpose of them doing that when you back button back no pages load until you get back to the original page you started from ??

At some sites, when you click on a link you are re-directed to another address that does not display a page but does some work and then forwards your request to the next address. some browsers such as Chrome do not record the intermediate web address as a visited site but IE does. Thus in IE when you click the back button you are taken to the intermediate site which just forwards you back to where you were. When this happens you must click the back button quickly before the intermediate site does the redirection.